U.S. patent application number 14/428180 was filed with the patent office on 2015-09-24 for operation management device of self-propelling mining equipment.
The applicant listed for this patent is Hitachi Construction Machinery Co., Ltd.. Invention is credited to Yuki Hara, Nobuyoshi Hirowatari, Yoshimi Kasai, Tsugumichi Owaki, Rikiya Tajiri, Takayuki Uchida, Akira Ueno, Shohei Yamagata, Hiroshi Yoshikawa.
Application Number | 20150269789 14/428180 |
Document ID | / |
Family ID | 50340750 |
Filed Date | 2015-09-24 |
United States Patent
Application |
20150269789 |
Kind Code |
A1 |
Yamagata; Shohei ; et
al. |
September 24, 2015 |
OPERATION MANAGEMENT DEVICE OF SELF-PROPELLING MINING EQUIPMENT
Abstract
Operation of self-propelled mining equipment in the field can be
accurately recognized at a remote position of the equipment. A
management center for controlling a dump truck receives signal from
sensors in order to show detection data for the working status of
the operation instruments and warning indication data based upon
the detection data. The warning indication data and the detection
data for the working status of the operation instruments are
displayed on the same display. Alternatively, in place of the
detection data for working status of the operation instruments,
related information from a data base concerning the record of
maintenance previously conducted may be displayed, or a graph of
the detection data for the working status of an operation
instrument of another dump truck which is operating in the same
working field may be displayed.
Inventors: |
Yamagata; Shohei; (Setagaya,
JP) ; Tajiri; Rikiya; (Matsudo, JP) ; Hara;
Yuki; (Ota, JP) ; Kasai; Yoshimi; (Nagareyama,
JP) ; Owaki; Tsugumichi; (Koto, JP) ;
Yoshikawa; Hiroshi; (Ota, JP) ; Uchida; Takayuki;
(Hitachi, JP) ; Ueno; Akira; (Ichikawa, JP)
; Hirowatari; Nobuyoshi; (Kasumigaura, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Hitachi Construction Machinery Co., Ltd. |
Tokyo |
|
JP |
|
|
Family ID: |
50340750 |
Appl. No.: |
14/428180 |
Filed: |
September 21, 2012 |
PCT Filed: |
September 21, 2012 |
PCT NO: |
PCT/JP2012/074209 |
371 Date: |
March 13, 2015 |
Current U.S.
Class: |
701/24 |
Current CPC
Class: |
G05D 1/0287 20130101;
E21C 35/24 20130101; G07C 5/008 20130101; E21F 17/18 20130101; E21C
47/00 20130101 |
International
Class: |
G07C 5/00 20060101
G07C005/00; E21C 35/24 20060101 E21C035/24; G05D 1/02 20060101
G05D001/02 |
Claims
1. Operation management device comprises an self-propelling mining
equipment which is working in a mining field, and a management
center for performing to control the operation of the
self-propelling mining equipment, the self-propelling mining
equipment being provided plural number of sensors for detecting the
operation of component parts, the detection data being transmitted
by means of a communication member to the management center,
characterized in that the device further comprising: the management
center having a signal processing member to perform signal
processing for preparing detection data for working status of
respective operation instruments based upon data transmitted from
the self-propelling mining equipment to be displayed in the form of
chronological pattern, and an image display member adapted to
indicate graph of detection data for working status of the
operation instruments; one or more warning levels being set to
output signals from the sensors, and a warning indication region
for showing warning indication data at respective warning levels,
and the image display member together with the detection data for
working status of the operation instruments or in place of the
detection data for working status of the operation instruments; and
the management center being connected an information storage member
for storing related information as to operation instrument provided
with the sensor, and the related information being read out from
the information storage member to display the related data together
with the warning indication data on the image display member.
2. Operation management device for mine site of self-propelling
mining equipment according to claim 1, wherein the image display
member adapted to show plural kinds of the related information, and
the image display member is provided a shift icon designated region
for displaying one of the related information.
3. Operation management device for mine site of self-propelling
mining equipment according to claim 1, the related information
contains maintenance history of the component part.
4. Operation management device for mine site of self-propelling
mining equipment according to claim 1, wherein the image display
member being adapted to instrument operation status detection data
for the component part of the self-propelling mining equipment, and
the related information being detection data for working status of
an operation instrument of other self-propelling mining equipment
than the detection data of the self-propelling mining equipment
shown on the image display member.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to operation management device
of self-propelling mining equipment, such as hydraulic or electric
driving type excavating machine.
DESCRIPTION OF THE BACKGROUND ART
[0002] Main works at a field of mining is mining work and dressing
work of ore. Mining work is to dig ore contained useful mineral out
from a mining field, and dressing work of ore is to dress and
extract useful mining material from dug ore.
[0003] Mining work is performed to dig the ground at a place to be
presented vein in a mining field, while dressing ore is not
performed at the working site of the mining area, but is performed
at an independent yard which is installed various equipment
necessary to dress and separate ore. Earth and sand are covered
over the layer of ore, and the earth and sand are not included ore
or useful material so that dumping site is provided for waste earth
and sand.
[0004] As a mining equipment, an excavating machine such as a
loader- or backhoe-type excavator or the like is used for mining
purpose having electric- or hydraulic power source, and an
extra-large sized excavating machine is normally used for the sake
of working efficiency. While, a dump truck is used as a
transportation machine to transfer mining ore from the mining field
to the ore dressing yard and also to transfer waste earth and sand,
rocks and the like to the dumping site. Usually, one excavating
machine is combined with a plural number of dump trucks as a unit.
Three to five dump trucks are provided in combination with one
excavating machine, although may be varied the number of
transportation machines to be combined depending upon the distance
from mining field to the ore dressing yard, the excavating machine
and the dump truck are typical mining equipment or mining
machine.
[0005] Work in the mining field continues usually every 24 hours
for 365 days without taking a day off, thus the mining machine or
equipment such as the excavating machine and a dump truck should be
operated in high efficiency as much as possible without causing
break down. Therefore, sensors are provided for every mining
machines at various positions for detecting conditions of being in
operation of respective working parts. Upon detecting overload and
conforming severe working condition, warning is transmitted to an
operator in a case of resulting possible failure the working
parts.
[0006] As explained foregoing, due to the mining machine works
continuously without cessation and so forth, maintenance service
and inspection cannot be performed frequently and works for
maintenance and inspection should be conducted efficiently within
short time period. For the sake of such purpose, as proposed for
example in a patent document 1, a management center is equipped at
a proper position within a field of mining for performing overall
management for the mining machines with being received various data
from respective sensors of the mining machine.
PRIOR ART DOCUMENT
Patent Document
[0007] Patent Publication JP 2012-149510 A1
SUMMARY OF THE INVENTION
Problem to be Solved by the Invention
[0008] In accordance with the patent document 1, detection data
retrieved from sensors provided at various working parts of the
mining machine are transmitted to the management center, then the
management center judges as to whether or not some malfunction is
recognized and which portion is occurred such the malfunction.
[0009] In this connection, at a time of detecting abnormal state
from either of sensor data, it is necessary to carry out, as a
matter of course, the works for maintenance and inspection, if the
abnormal state is caused by malfunction of a device or apparatus.
However, the abnormal state of the sensor is not always caused by
the malfunction of the device or apparatus. For example, the mining
machine is driven and operated by an operator, therefore ability
and quality of the operator affects largely for the operation
performance the mining machine. In addition, the abnormality of
sensor data may be caused by irrational operation of the operator.
Further, abnormal sensing may also be occurred depending upon
weather condition or circumstance situation. Furthermore, the
abnormality may be occurred in the sensor per se but not
abnormality being occurred on the device or apparatus to be
sensed.
[0010] In summary, it is not always to result abnormality for the
device or apparatus consisting of the mining machine, even if any
sensor provided on the mining machine detects abnormality, thus in
some case that works for maintenance and inspection is not required
to the mining machine due to being caused by the operator's quality
and the like. Even if in a case of maintenance and inspection is
required, further judgment is to be needed as to whether the
maintenance working should be performed immediately or flexibility
of time has some time allowance to start the maintenance works. In
addition, it is necessary to determine menu for maintenance works
such as how to and which manner should be performed for maintenance
work, and the like.
[0011] However, since such judgment is done in the center which is
remote from the mining machine, precise judgment cannot be
performed merely from the detected data of sensors provided at
various portions of the mining machine. That is to say, proper
judgment cannot be finally made merely by means of information from
the mining machine in the course of working as to whether or not to
carry out the maintenance work, when the maintenance work is
carried out, and what work should be carried out for the
maintenance work.
[0012] The present invention is accomplished in light of the
foregoing, the object of the present invention is to acquire
precise information as to the status of self-propelling mining
equipment under the operation on a working field at a remote
place.
Means for Solving the Problem
[0013] In order to solve the foregoing problem, operation
management device of self-propelling mining equipment in accordance
with the present invention comprises an self-propelling mining
equipment which is working in a mining field, and a management
center for performing to control the operation of the
self-propelling mining equipment, the self-propelling mining
equipment being provided plural number of sensors for detecting the
operation of component parts, the detection data being transmitted
by means of a communication member to the management center,
characterized in that the device further comprising: the management
center having a signal processing member to perform signal
processing for preparing detection data for working status of
respective operation instruments based upon data transmitted from
the self-propelling mining equipment to be displayed in the form of
chronological pattern, and an image display member adapted to
indicate graph of detection data for working status of the
operation instruments; one or more warning levels being set to
output signals from the sensors, and a warning indication region
for showing warning indication data at respective warning levels,
and the image display member together with the detection data for
working status of the operation instruments or in place of the
detection data for working status of the operation instruments; and
the management center being connected an information storage member
for storing related information as to operation instrument provided
with the sensor, and the related information being read out from
the information storage member to display the related data together
with the warning indication data on the image display member.
[0014] In this connection, the working field to be operated the
mining machine is a field of mining. Self-propelling mining
equipment disposed in a mining field consist normally of an
excavating machine having a digging mechanism and a dump truck as a
means for transportation. The excavating machine is normally placed
almost stationary during to perform excavation. While, the dump
truck travels reciprocally between mining field and an ore dressing
yard for dressing ore from others placed at a position remote from
the mining field.
[0015] The self-propelling mining equipment is provided with
various sensors, in a case of the dump truck, there are provided a
speed meter to measure the vehicle travelling speed or the like, a
rotation speed meter to detect rotational speed of the engine, a
thermo-sensor to detect the temperature of respective parts, a load
sensor to measure the weight of loaded substance, a pressure
sensor, a velocity sensor, a voltage sensor, an ammeter, and the
like. These sensors are provided for making to monitor the
operation behavior of respective component parts of the mining
machine, and as a result of the detection, warning is generated for
ensuring to understand the operator in operation of the mining
machine, if necessary. On the basis of the warning generation, the
operator may be allowed to apply a proper measurement such as to
reduce load of the corresponding component or instrument part.
[0016] Although the several kind of warning means may be adopted to
the operator of the mining machine, a system may be adopted that,
for example, one warning means is used such as buzzer or the like
with respect to warning signal, and two or more warning levels are
set in connection with warning indication on operation control as
descried hereafter. Warning on the side of mining machine and
warning indication on the side of the management center may have
same characteristic, but warning manner for the management center
may have different characteristic from the warning for the mining
machine which has plural levels.
[0017] The detection data from respective sensors transmit to the
management center after predetermined processing being performed.
The operation process of the mining machine is controlled on the
basis of the detection data. Operation management shows a
chronological graph of the output signal of various sensors after
signal processing. This is operating status detection data of
instruments. Further, a warning indication data is created in
addition to or in replace of the instrument operating status
detection data. The warning indication data is to generate warning
when the detection level of the sensor becomes over a predetermined
standard level which is set as a baseline level with respect to
sensor output, thus preparing chronologically aligned warning
indication. The warning indication may be included plural levels
such as "alert level" and "pandemic level".
[0018] It is supposed that some failure may be occurred in any
instrument or component part at the time that higher level of
warning indication or repeated warning indication was generated.
However, there is possible situation to be caused by defect of the
sensor, or to be brought about by operation manner of the operator,
in addition to the actual defect of the instrument or component
part. In other words, a proper judgment cannot be made for details
of warning merely by the instrument operating status detection data
or warning indication data, specifically as to either causing
trouble in any component part or any sensor, or problem in
operator's quality and ability. Further, in a case of trouble in a
component part of instruments, it is unknown about whether or not
to be performed maintenance, when to do so, which portion is
required to make maintenance, and whether or not replacement of any
component part is needed.
[0019] In consideration of foregoing matters, additional related
information can be shown on the image display member in addition to
the chronologically aligned warning indication. The additional
related information is stored in the information storage member,
specifically in data base, thereby the related information being
read out from the information storage member and being indicated on
the image display member together with the chronological warning
indication.
[0020] Available image in relation with the related information to
be displayed on the image display member is not limited to one kind
information, but can be selected from several kinds of related
information. For the sake of the selection, shift icon designation
region can be formed on the image display member for switching to
display one of plural number of the related information, thereby
allowing to display necessary information by clicking one of icons
shown in the shift icon generation region.
[0021] In this connection, maintenance information is one of the
related information. In a case that maintenance history for one of
instruments is shown on the image display member is displayed, a
judgment can be done whether or not time has come for conducting
maintenance, and whether incomplete matter, error or the like had
happened at a last maintenance work, and if judged necessary to be
conducted maintenance, a maintenance menu can be prepared. As a
result, maintenance performance can be done in speedy and certain
manner.
[0022] In a mining field, plural number of dump trucks are
organized with one excavator. All of these dump trucks are
performed same operation to travel substantially same driving root.
Therefore, by comparing respective detection data concerning
operation components in each dump truck, difference in operation
level can be known between a sensor of a dump truck which is
generated warning and those of other dump trucks, thereby the
quality and ability of individual operator of the dump truck is
revealed by the extent of difference in respective detection data.
As a result, in a case where the apparent difference is resided in
output data concerning operation components in skill of individual
operator, but does not run into any trouble, maintenance work
should not be carried out irrespective of warning indication, but
other measurement should be taken to such situation. Comparing
respective detection data concerning operation components to those
of other dump trucks is also recognized in the difference of
sensibility for respective sensor.
Effects of the Invention
[0023] Operation situation of a mining machine at working field is
accurately recognized at a remote position of the mining machine,
thus ensuring prompt troubleshooting.
BRIEF DESCRIPTION OF THE DRAWINGS
[0024] [FIG. 1] is a schematic diagram to show mining works in
mining field in one embodiment of operation by a mining
machine.
[0025] [FIG. 2] shows a side elevation view of a dump truck as an
example of the mining machine.
[0026] [FIG. 3] is a block diagram of one example for operation
management of the dump truck.
[0027] [FIG. 4] is an explanatory drawing to show detection data
change in exhaust gas temperature as one sensor of the dump
truck.
[0028] [FIG. 5] is a block diagram of composition of signal
processing apparatus installed in a management center provided in a
mining field.
[0029] [FIG. 6] is an explanatory drawing of a image display member
to show an image of situation of operation works of the mining
machine on a display.
[0030] [FIG. 7] is an explanatory drawing to show an image of
maintenance history on the display.
[0031] [FIG. 8] is an explanatory drawing to show an image of
comparative data on the display.
EMBODIMENT OF THE INVENTION
[0032] Hereafter, embodiments of the present invention will be
described with reference to the attached drawings. First of all,
all over a mine site in which as self-propelling mining equipment a
excavating machine 1 and dump truck 2 are operated is schematically
shown in FIG. 1. In this figure, 3 denotes the mine site, 4 denotes
a dumping site for dumping useless earth and sand, and 5 denotes a
separating yard for extracting useful ore. In this figure, two vein
of ore are existing in the field of mining, thus being operating in
respective mining field an excavating machine 1 as hydraulic or
electric shovel, and the dug ore being transferred out from the
mine site 3 by means of a dump truck 1. Useless earth and sand is
dumped to the dumping site 4 and useful ore is transferred to the
separating yard 5 for extraction. Extraction is performed for
separating the dug ore to useful ore and to useless ore, relevant
equipment such as a crusher is installed in the separating yard
5.
[0033] A working unit is constituted in one excavating machine 1
for plural number of dump trucks 2. In this figure, four dump
trucks 1 are allocated per one excavating machine 1. The dump truck
2 has a construction as shown in FIG. 2. That is, a vehicle body
frame 11 which is mounted wheels 10 is provided an operator's cab
12 and a vessel 13. The vessel 13 is loaded dug substance by the
excavating machine 1 runs between the mine site 3 and the
separating yard 5 or between the mine site 3 and the dumping site
4.
[0034] The dump truck 2 is positioned at the mine site 3 and is
loading in the vessel dug substance by the excavating machine 1.
The dump truck 2 thus loaded dug substance is transferred through a
predetermined root to the separating yard 5 (to dumping site 4, in
a case of useless dug substance), then the dug substance is dumped
by tilting the vessel 13 toward rearward direction, or pursuing
dumping action. After then, the vessel 13 is restored to horizontal
state and the dump truck 2 travels to return the mine site 3. In
the following explanation, operation management is referred to as
adapted to a dump truck 2, the operation management apparatus can
also be applied to other self-propelling mining equipment such as
excavating machine or the like.
[0035] The above-mentioned dumping action is actuated by a dumping
cylinder 14. Suspension cylinders 15 are extended to between the
vehicle body frame 11 of the dump truck 2 and axles of traveling
mechanism respectively at the fore and rear, right and left
positions. These suspension cylinders 15 detect the load weight on
the dump truck 2.
[0036] The dump truck 2 are mounted various sensors 20a, 20b,
(generically called as reference numeral 20) to detect whether or
not respective component parts are operated properly, thereby being
adapted to monitor the operation states of respective component
parts. As shown in FIG. 3, the detection signal of the sensor 20 is
transmitted to a sensor data processor 21 to process predetermined
input signal. The sensor data processor 21 prepares detection data
concerning the component parts which is displayed in a form of
graph to chronological arrangement of the signal level from the
sensor 20.
[0037] Temporal transition in chronological with respect to exhaust
gas temperature of engine is shown in FIG. 4, as an example of
detection in the sensor 20. Exhaust gas temperature is an important
administration item in relation to environmental pollution,
protection of instruments, fuel consumption efficiency and the
like, thus exhaust gas temperature should be restricted within a
predetermined range. For this reason, proper temperature range
PU-PL and limit temperature rang BU-BL are set in FIG. 4. The
exhaust gas temperature is transitioned within the range of PU-PL,
the dump truck 2 is traveled in a proper state. Even if over proper
temperature PU or under proper temperature PL, there is no problem
for traveling per se as far as within limit temperature rang BU-BL.
However, higher than limit temperature BU or lower than limit
temperature BL, there is possibility to occur damage or failure in
engine or related instruments.
[0038] A malfunction judgment member 22 is connected to the sensor
data processor 21, the malfunction judgment member 22 decides to
whether or not warning is to be generated. In this connection,
since proper temperature range PU-PL and limit temperature rang
BU-BL are set, two stage warnings can be set corresponding to the
two temperature ranges. In this connection, warning generated from
a warning member 23 to the operator of the dump truck 2 is selected
to the limit temperature range BU-BL, thus in a case where the
malfunction judgment member 22 is detected that exhaust gas
temperature is out of the limit temperature range BU-BL, a buzzer
is sounded as an alarm. For the sake of warning, for example, it
may be set that in a case out of proper temperature range PU-PL, a
lamp is lighting as "alarm level", while in a case out of limit
temperature range BU-BL, in order to definitely notify to the
operator as "pandemic level", by the lamp and the buzzer are
simultaneously functioned.
[0039] A management center 30 is established at a desired position
in the mining field, the management center 30 making controls
various works in the overall mining field. The dump truck 2 is
provided a wireless communication member 24, thereby the wireless
communication transmitter 24 facilitating to transmit the detection
data about operation of the component parts to the management
center 30 with wireless communication.
[0040] A wireless communication receiver 31 is mounted on the side
of the management center 30 so that various data transmitted from
the wireless communication transmitter 24 of dump truck 2 are
received in the wireless communication receiver 31. Further, the
wireless communication receiver 31 is connected to a signal
processing member 32, thereby the signal processing member 32 being
prepared necessary data to produce management image to be shown on
a display 33. In this connection, the management image includes
transition of operating state and warning indication.
[0041] The construction of the signal processing member 32 to
prepare the management image in FIG. 5. As shown in this figure,
the wireless communication receiver 31 receives the instrument
operating status detection data which is acquired by sensors 20
provided in various actuating instruments consisting of the dump
truck 2. Here, for example, a sensor 20 is provided for detecting
temperature of exhaust gas from an engine of the dump truck 2, thus
explanation hereinafter is made in relation to control exhaust gas
temperature of the engine on the basis of detection data of
actuation state of instrument.
[0042] The detection data of exhaust gas temperature of the engine
is transmitted from the dump truck 2 together with other data, then
these data are received by the wireless communication receiver 31
of the management center 30, thereby a graph creating section 34
prepares instrument operating status detection data in a form of
graph which shows transition in chronological pattern of engine
exhaust gas temperature provided in the dump truck 2. Data for
plural stage warning indications, such as "alarm level" and
"pandemic level", are created depending upon instrument operating
status detection data. Therefore, the signal processing member 32
has a warning level judging section 36, the warning level judging
section 36 detects and which level is detected. The management
image shown on the display 33 consists of the instrument operating
status detection data and warning generation data arranged in the
form of chronological pattern. FIG. 6 shows an example of
management image on the display 33. The management image shown in
FIG. 6 contains a chronological graph of engine exhaust gas
temperature of the dump truck 2.
[0043] Plural display areas are assigned on a screen of the display
33. The screen shown in FIG. 6 has a time axis indication region
40, a warning indication region 41 and an instrument operating
status detection data 42. Further, a shifting icon indication
region 43 is provided at the upper portion of the screen.
[0044] The instrument operating status detection data 42 is
indicated the temporal transition in chronological of the engine
exhaust gas temperature as shown in FIG. 4. The warning indication
region 41 shows warning generation along the line with time axis.
In the figure, warning mark with triangular shape represents
generation of warning at alarm level which is outside of the proper
temperature range PU-PL, while in a case where being generated
warning at pandemic level outside of the limit temperature range
BU-BL, the warning is represented in the form of gear shape, that
is generating the warning of a level with which a danger will
possibly be caused damage for the engine of other instruments.
Thus, there are two level warnings, the generated warning level is
determined by the warning level judgment section 36 in accordance
with the signal from the wireless communication receiver 31. The
operation status detection data of instruments prepared from the
graph creation section 34 and warning indication data prepared from
the warning level judgment section 36 are inputted to an image
creation section 37, thereby being displayed administration data
image consisting of transition of engine exhaust gas and warning
indication on the display 33.
[0045] The administration data image shown in FIG. 6 is an
instrument operation status detection data. Other image can be
shown on the display 33 in place of the operation status detection
data of instruments. The shift icon designated region 43 is
provided for this purpose. Therefore, the screen of the display 33
is sifted to show a specified image by making selection of one of
icons 43a to 43e in the shift icon designated region 43.
[0046] When the icon 43a is selected, the operation status
detection data of instruments as shown in FIG. 6 is displayed.
Thereby, engine exhaust temperature is shown on the display 33 and
2 kinds of the warning indications are indicated at the warning
indication region 41 depending upon engine exhaust temperature.
[0047] Another display mode is adapted to be shown by the operation
of the shift icon designated region 43. In this connection, the
icon 43b is provided for selecting to show maintenance record
indication screen, the maintenance record indication screen is as
shown on FIG. 7 consists of date indication region 50, maintenance
demand (recall) indication region 51 and maintenance performed
indication region 52, further warning record indicating region 53.
In addition, detailed list indicating region 54 is also presented
on the display 33. The detail list indication region 54 contains
list up the contents of item BU of maintenance demand indication,
item TI of the performed maintenance, and item AL concerning
warning to be started maintenance, respectively arranged in order
of occurrence.
[0048] At the time of performing maintenance, the icon 43b is
selected to show maintenance record indication image on the screen,
thereby history of performed maintenance being shown in the
maintenance demand indication region 51, thus allowing to make
reference of the judgment as to whether or not actually need the
maintenance, and when and which kind of maintenance should be
performed.
[0049] For the foregoing reason, a related information selecting
section 38 is connected to the image creating section 37, and
maintenance related information is in advance recorded in a data
base 39 which is information recording member, thus being displayed
in a detailed list indicating region 54 of data as shown in FIG.
7.
[0050] Further, when the shift icon designated region 43 is
operated on the display concerned information, that is, in a case
that the icon 43d is a selected, information as to resolving method
can be acquired for dissolving the malfunction resulted to
generated warning, while at the time of selected the icon 43e,
information being available as to what work is necessary for the
maintenance and lists of tool and accessary necessary for
maintenance and inspection works. In addition, further information
can be acquired as to whether or not maintenance is performed in
proper timing, and whether or not the maintenance is properly
performed.
[0051] Related information of the instrument operating status
detection data 42 can be shown while keeping the indication of at
least the warning indication region 41. In this connection, plural
number of icons are provided for the shift icon designated region
43. In a case if the icon 43a is selected, the operation status of
the dump truck 2 is indicated in the instrument operating status
detection data 42.
[0052] Further, at the time of selected the icon 43c, the screen is
shifted to a comparative data as shown in FIG. 8. Plural number of
dump truck 2 travel reciprocating between the mine site 3 and the
separating yard 5, and respective dump truck 2 are traveling
approximately predetermined route. Therefore, The chronological
transition of exhaust gas temperature represented as the operation
status data of instruments are to be indicated substantially
similar trend. Therefore, in case of warning is generated, judgment
can be made as to whether or not any malfunction is occurred,
whether trouble is caused operation by the operator, or the like,
by showing side by side on the display 33 the data REAL in one dump
truck 2 and the data COMP of another dump truck.
[0053] In addition, plural number of sensors for exhaust
temperature are arranged in the exhaust passage, thus accordingly
allowing to show the display 33 a composite graph data indication
CGD that graphs acquired from respective sensors are superposed
form on the same time axis. Further, partially extracted indication
LGD from the graph is shown on the same screen. By doing so, the
difference of temperature in the exhaust passage of engine can be
recognized, thereby being attained useful information for traveling
management of the dump truck 2.
DESCRIPTION OF REFERENCE NUMERALS
[0054] 1 excavating machine, 2 dump truck, 3 mine site, 4 dumping
site, 5 ore dressing yard, 20 sensor, 21 sensor data processor, 22
malfunction judgment member, 23 warning member, wireless
communication transmitter, 30 management center, 31 wireless
communication receiver, 32 signal processing member, 33 display, 34
graph creating section, 35 warning level detection section, 36
warning level judging section, 37 image creating section, 38
related information selecting section, 39 data base
* * * * *